Self-fluxing solder.



No. 628,541. Patented .luly Il, |899.

J. F. KESTER.

SELF FLUXING SOLD/EB.

(Application led Nov. 4,.1898.)

O OO OOOO OOO @00000000000000000000 O O O O Zgses j mZ/ve @idw j WHW@ iwUNITED STATES PATENT OEErcEQ JESSE F. KESTER, OF BUFFALO, NEV YORK.

SELF-FLUXING SOLDER.

SPECIFICATION forming part of Letters Patent No. 628,541, dated July 11,1899.

f Application tiled November 4, 1898. Serial No. 695,444. (No model.)

To all whom it may concern.'

Beit known that I, JESSE F. KESTER, a citizen of the United States,residing at the city of Buffalo, in the county of Erie and State of NewYork, have invented a new and useful llnpro'vementin Self-FluxingSolder, of which the following is a specification.

This invention relates to solder or soldering-wire which has asuM/tahlejux incorporated therewith, so that the iiuxis melted with thesolder and automacally supplied to the same. Such self-fluxing solder orwire has heretofore been constructed in the form of a tube having acontjlnnoilpaity from end to end, which cavity was filled with a liuxeither dry or pulverized or in the forrnpf a paste. This construction isobjectionable because as the iiux fuses ata lower temperature than.

the solder it melts not only at the end of the solder, but some distancefrom the end of the same, and too much, therefore, runs out ofthetubular solder at-each operation, leaving little or no flux close enoughto the end of the tube to be of any service for the next solderingoperation. l The object of my invention is to so construe the solderthat when the same is heated only the proper quantity of flux will besupplied thereto throughout the length of the rod or wire, and to thatend my invention consists,

, essentially, in providing the solder with a longitudinal series ofisolated cells or compartments containing the flux.

In the accompanying drawings, Figure l is a longitudinal section of apiece of. tubular soldering-wire illed with a iiuX, showing itscondition before being corrugated to form tiuX-cells. Fig. 2 is alongitudinal section of the iinished solder on an enlarged scale. Fig. 3is a top plan View thereof. Figs. 4 and 5 are cross-sections of the samein lines 4t 4 and 5 5, Fig. 2. Fig. 6 is a top plan view of aslightlymodified construction of the solder; Fig. 7 is a cross-sectionin line 7 7, Fig. 6. Fig. 8 is a longitudinal section showing anothermodied construction. Fig. 9 is a cross-section in line 9 9, Fig. S. Fig.l0 is a top plan view showing a modified form and arrangement of theiiuX-cells.

Like letters of reference refer to like parts in the several figures.

My improvement t nsists in forming the solder or soldering-wire with aseries of adjoining isolated cells, cavities, or compartments a, whichcontain the flux b instead of providing the solder with an unbroken coreor filling of iiuX from end to end. By thus charges only one linx-cellis melted off the solder at a time, thereby alwayssupplying the properquantity of flux to the solder a-nd preventing the irregular andexcessive running out of the iiux incident to the use of a separateiiuX-cells may be formed and arranged in the solder in various ways.

In the preferred construction (shown in Figs. 2, 3, Ll, and 5) the cellsor pockets are formed by iilling a tube or hollow wire of solder with asuitable iiuX either in dry, plastic, or liquid form, as shown in Fig.1, and then compressing or pinching the tube at intervals, say, of aboutthree-sixteenths of an inch, so as to close the interior walls of thetube together and form partitions or webs c, which isolate each cellfrom adjoining cells, as shown in Figs. 3, L1, and 5. The solder may beprepared in this manner by grooving ordinary shaped in cross-section,then filling the groove with flux, again closing the edges of the soldertogether and giving it a rounded or oval cross-section, and nallycorrugating it between suitable rollers or otherwise for forming thepartitions c. By this construction the ilux is not only prevented fromrunning out of the solder in irregular and excessive quantities, but thesolder is easily divided into cells of uniform 'size containing auniform quantity of flux.

Vhen my improvement is applied to comparatively wide bars of solder-suchas are used, for instance, by roofers--the bar may be provided withseveral rows of cells, as shown in Figs. 6 and 7, and the cells may bearranged in straight rows extending from end to end of the bar, as shownin said iguye, or in diagonal rows, as shown in Fig. l0, in which lattercase the cells may be lozenge-shaped, as shown.

As a further modification omy invention the self-fluxing solder may beformed from a solid bar or rod of solder by forming the .flu-:i

dividing the tluX into separate sections or solder having a continuouscore of iiuX. These and well-known wire solder lengthwise betweenrollers or otherwise to render it trough- IOO Cells or compartments Ctin the surface of the bar and closing the same by a Covering-strip CZafter lling them with iiuX. This covering-stri p may be applied to thesolder by pressure or otherwise.

I claim as my invention-- l. A self-tluxing solder provided withalongitudinal series of independent cells or oompartments eachcontaining a suitable iiux, substantially as set forth. Y

2. A self-iiuxng solder having a longitudinal series of adjoining cellsor compartments closed on all sides and each containing a suitable tluX,substantially as set forth.

3. A self-fluxing solder Consisting' of a tubular wire or rod of solderhaving its Walls pressed together at intervals forming Webs orpartitions Which divide the cavity of the tubular solder into alongitudinal series of isog lated cells or compartments, said cellsbeing 'filled with a suitable flux, substantially as set forth.

fitness my hand this 28th day of October, 1898.

JESSE F. KESTER. l/Vitnesses:

CARL F. GEYER, ELLA R. DEAN.

